package thread;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class ThreadPoolDemo {
    public static void main(String[] args) {
        ExecutorService threadPool = Executors.newFixedThreadPool(3);
        for(int i=0;i<5;i++){
            Runnable r = new Runnable(){
                public void run(){
                    Thread t = Thread.currentThread();
                    System.out.println(t+"正在处理任务");
                    try{
                        Thread.sleep(3000);
                    }catch(InterruptedException e){
                    }
                    System.out.println(t+"任务处理完毕");
                }
            };
            threadPool.execute(r);
            System.out.println("将一个任务交给了线程池");
        }
        threadPool.shutdown();
        System.out.println("线程池已关闭");
    }
}
